FreshRemote.Work

Lead Systems Engineer

USA-Remote Work

General information

Requisition # R59597 Locations USA-Remote Work Posting Date 04/03/2025 Security Clearance Required Top Secret Remote Type Fully Remote Time Type Full time

Description & Requirements

Transform the future of federal services with ManTech! Join a vibrant, energetic team committed to enhancing national security and public services through innovative tech. Since 1968, we’ve partnered with Federal Civilian sectors to deliver impactful solutions. Engage in exciting projects in Digital Transformation, Cybersecurity, IT, Data Analytics and more. Ignite your career and drive change. Your journey starts now—innovate and excel with ManTech!

ManTech seeks a motivated, career and customer-oriented Lead System Engineer to join our team for 100% remote work from anywhere in the continental US.

Responsibilities include, but are not limited to:

  • Perform multi-level troubleshooting and root-cause problem solving, apply Transmission Control Protocol/Internet Protocol (TCP/IP) routing and switching principles to practical solutions.

  • Ability to configure, maintain, and upgrade LAN/WAN design and topology.

  • Install/configure LAN/WAN hardware and maintain wiring closets and nomenclature.

  • Manage Cisco and other hardware, including consumer-grade routers and switches.

  • Monitor with standard network management and packet analysis tools.

  • Plan, implement, and administer perimeter security and firewalling.

  • Evaluate new technologies and make design recommendations for a more efficient and cost-effective network infrastructure.

Minimum Qualifications:

  • Bachelor’s degree in Computer Science or a related field and 5 or more years of related experience or a combination of education and work experience.

  • Cisco Certified Internetwork Expert (CCIE) Enterprise Infrastructure.

  • 2+ years of experience with firewall configuration and load balancing.

  • Understand network protocols including TCP/IP, User Datagram Protocol (UDP) and other common protocols.

  • Have expert knowledge of Border Gateway Protocol (BGP)/Enhanced Interior Gateway Routing Protocol (EIGRP) routing protocol.

  • Understand all aspects of Virtual Private Network (VPN) design and configurations.

  • Have expert knowledge of TCP/IP and troubleshooting connectivity issues.

  • Experience working in an Agile organization using Scrum, Extreme Programming (XP), Kanban, and SAFe.

Security Clearance Requirements:

  • Must have an active Top Secret clearance.

Physical Requirements:

  • Must be able to remain in a stationary position more than 50% of the time.

  • Constantly operates a computer.

  • Frequently communicates with co-workers, management and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.


The projected compensation range for this position is $114,100.00-$191,100.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories.  In addition, ManTech invests in it’s employees beyond just compensation.  ManTech’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, Short Term and Long Term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.

ManTech International Corporation considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.
If you need a reasonable accommodation to apply for a position with ManTech, please email us at careers@mantech.com and provide your name and contact information. Apply